Incubator.



C. H. OSBORN.

INCUBATOR. APPLICATION FILED JULY 15,'1914.

L14,Q% Patented we 22, 1915.

2 SHEETS-SHEET 1.

CLARK H. OSBORN, OF ST. JOSEPH, MISSOURI.

INCUBATOR.

Specification of Letters Patent.

Patented June 22, 1915.

Application filed July 15, 1914. Serial No. 851,082.

To all whom it may concern Beit known that I, CLARK H. OSBORN, a

citizen of the United States, and a resident of St. Joseph. in the county of Buchanan and State of Missouri, have made an Improvement in Incubators, of which the following is a specification.

My invention pertains to that type of incubators in which the required temperature is maintained by heated water contained and circulating in the hollow alls surrounding the eg -holding pans or trays.

In carrying out my invention I support a series of pans or trays one over the other around a central vertical, metal tube which serves as an elongated chimney for a lamp employed as a heating medium. The egg trays are supported upon flanges secured to the inner wall of the body or casing of the incubator, and may be rotated thereon to facilitate the introduction of eggs through a door provided for this casing or body.

The details 01": construction, arrangement and operation of the incubator are as herein after described and shown in the accompanying drawing, in which,

Figure 1 is a side elevation of the incubator: Fig. 2 is a plan view: Fig. 3 is a central, vertical section of the same: Fig. 4 is a horizontal section.

The body of the incubator is cylindrical in form and constructed of sheet metal, there being two cylinders a and a, the latter arranged within the former and spaced therefrom at top, bottom, and sides, to form a chamber in which water circulates. The center of the two cylinders which thus form the body is occupied by a tube 1) whose ends body is provided at top and bottom with draft regulators d, which serve to admit fresh air to the inside cylinder at when required.

An opening is provided at e in the top of the outer cylinder a, and is closed by a screw cap- This permits water to be introduced into the spaces in which it circulates as shown by arrows, Fig. 3. A drain-cock f is provided at the bottom of the body for drawing oil water when required. Circular egg-holding pans g are provided, there being in this instance three arranged one above another, as shown in Fig. 3. The bottoms of these trays are formed of woven wire to permit free circulation of heated air. The pans are supported upon right-angular flanges h secured to the inner wall of cylinder a. The central portions of the trays are provided with flanged openings which receive the tube e, and permit the circulation of air. The outer body of the incubator is provided with adoor 2', the same being hinged and provided with a pivoted latch as shown.

It will be understood that the annular trays 9 may be rotated around the central tube 6 for the purpose of bringing any portion of them adjacent to the door for receiving eggs or removing eg -shells and chickens. The trays are each divided by four radial partitions g, as shown in Fig. 4. It will be understood that the water becoming heated from the lamp, will rise 1n the central space between the tubes 6, c, and, by diverging at the top, they pass down around the sides and under the bottom of the inner cylinder a and thus back to the starting point. Thus the interior of the cylinder a will be kept warm or heated to a degree required for hatching eggs, the heat being very easily distributed so that all portions of the egg-chamber are heated to a like degree.

A water-glass indicator is attached to the upper portion of the outer cylinder a, as shown in Fig. 1, to enable the operator to discern at a glance the height of the water in the circulating spaces. This tube belng open at the top, also permits expansion of the water as it becomes heated. In practice, the body of the incubator is supported by legs a which are connected by transverse bars forming the support for the lamp. In practice, an asbestos sheet or covering may be applied to the body, but, even wlthout 1t, therequired temperature of the interlor of the incubator would be maintained for several hours even if the lamp were to become extinguished. The division of the trays by means of partitions provides for distribution of eggs, or, in other words, prevents the mixing of different kinds of eggs. It

is apparent that the incubator may be continuously operated, fresh eggs being suppliedas others are hatched.

I claim 1. The improved incubator comprising a body having hollow walls formed by inner and outer cylinders spaced apart, a central vertical tube connecting the upper and lower ends of the inner cylinder, a Waterholding circulating space being thus formed at the top, bottom, sides, and middle of the incubator, and egg-holding trays arranged and supported Within the mner cylinder, as described.

2. The improved incubator comprising a body formed of inner and outer concentric cylinders spaced apart at top, bottom, and sides, a central tube connecting the top and bottom of the inner cylinder, and a smallertube arranged within the former and spaced therefrom, the same being extended below the body and to the top of the outer cylinder and serving as a chimney and heat-distributer, as, described.

3. The improved incubator comprising inner and outer concentric cylinders spaced apart at top, bottom and sides, a central tube connecting the ends of the inner cylinder and providing a Water circulating space in the center, and on the top, bottom, and sides of the body, a heating tube arranged Within the first-named tube and spaced therefrom, and means attached to the top and bottom of the body for regulating admission of air, as described.

CLARK H. OSBORN.

Witnesses: I

Mom. H. CRAIG, ERNEST R. JAMES. 

